If you keep lifting the same way, you’ll keep looking the same way — here’s how to actually grow.
If you’re training and eating reasonably well, most beginners can see clear changes in 8–12 weeks and very visible changes in 6–12 months. Think in terms of a few kilos of muscle per year, not per month, and expect progress to be fastest in your first 1–2 years of proper lifting, then slow down. Photos, strength logs, and how your clothes fit will show progress long before random people start commenting.
You can do both at once, but it’s easier under certain conditions: you’re new or returning to training, you have more fat to lose, and you’re eating enough protein and training hard. In that case, a small calorie deficit with proper lifting can build muscle while fat drops. If you’re already fairly lean and experienced, you’ll usually get better results by clearly choosing a muscle-focused phase (slight surplus) or a fat-loss phase (modest deficit) instead of trying to be perfect at both.
You can build plenty of muscle with zero supplements if your training, food, sleep, and consistency are solid. A basic whey or plant protein powder is just a convenient food, and creatine monohydrate has strong evidence for helping strength and muscle a bit, but neither is magic. Most other supplements are either marginal or pointless for a normal lifter. If money is tight, skip pills and powders, buy better food, and focus on showing up and progressing in the gym.